Improvement in monkey-wrench



v of the wrench.

naar swat gutwt (attire.

Leners Patent No. 93,521, dated August 1o, fisco.

IIIVIIPR.OV'IEMIENI- IN MONKEY-WRENCH.

The Schedule referred to in these Lett ers Patent and makingpartof the same. a

To all whom 'it 'may concern Be it known that I, LORING GOES, of the city and county of Worcester, and State of Massachusetts, have made an invention of a new and useful Improvement in Monke -\Vrenches; and that the following is a full, clear, and exact description and specification of :of fig. l.

the same.

The purpose of this invention is to sustain the thrust of the screw whichoperates the mo Yable jaw Many ways of doing this have been devised previous to my present invention, and, in one of the earlier, the bearing for the end of the screw is sustained by a nut screwed upon the end of the shank or tongue ofthe bar of the fixed jaw, the strain being transmitted from said bea-ring to said nut through the intervention of the wooden handle which surrounds said tongue. This method is advantageous on account of its simplicity, but as the wooden handle is formed of a comparatively'soft material, which is also porous, and is rendered stillsofter by the absorption ofthe oil with which the hands of machinists, who usesuch m'enches,

are usually soiled, this mode of securing the screwbearing is insecure and defective, the practical result being that the wood yields to the strain, and the iustrument becomes rickety by Vcontinued. use.

Theobject of the present invention is to obviate the defects of the previous mode thus referred to, and, at the same time, to retain the advantages due to the simplicity ofthe construction. Tothis end,

My invention consists of the combination of the bearing of the screw of the movablejaw with the nut at the end of the tongue of the wrench, through the intervention of a metallic strut, which isl encased by. the handle of the wrench.

In this.combination lthe strain ofthe movable jaw is sustained by the nut at the end .of the Ahandle and tongue; but the strain is transmitted through a strut which is not only constructed rof a hard material, but `is not affected by oil and grease. Un the other hand, the handle presents the same external appearance and lightness as in the old wrench; but as, in this new combination, it embraces the metallic' Strut,*the latter may be kept in place by the handle, and also prevented by it from buckling under the strain.

In order that my invention may be fully understood, I have represented in the accompanying drawing, and

and

- braces the strut, and tends will proce-ed t-o describe, a monkey-wrench embodying my invention Figure l representinga side view of the wrench; Figure 2, a longitudinal sec-tion of a portion of it;

Figure 3, a transverse section of it at the line x :v

In the said wrench, the fixed jaw A is forged fast to the bar B, which terminates in the tongue or shank c.

The end of the tongue 1s screwed to receive the y nut- D, which holds the handle E in place upon the tongue c.

'ihe movable jaw F is constructed to slide upon the bar B, and is moved by the screw G, whose thrustbearing h. is formed by a projection, i, of the fel-rule J, at the inner end of the. handle E.

The strain from the thrust-bearing is transmitted to the nut D -by the iron or steel strut l, which is applied to the side of the tongue c, and, being metallic, is not' aiiccted by oil, grease, or moisture.

The handle 'E is hllowed out to fit upon the tongue c and strut l, and, being slipped over them, is held in place by, the screw-nut D.

The bore ot' the handle is, in this example, fitted tightly to the tongue and strut, so that it closelyy emto prevent it from buckling'undcr the endwise strain.

In the wrench thus described,'the thrust-bearing is formed in one piece with the ferrule, but that construction is not essential, as the two may be formed of separate pieces, one placed over the other upon the tongue c. v

What I claim asmy invention, and desire to secure by Letters Patent, is-

The combina-tion of the thrust-bearing of the screw, the tongue, the nut at the end of the tongue, the

strut, (interposed between the thrust-bearing and the nut,) and the handle, the whole constructed to operate substantially as before set forth.

1n testimony whereof, I have hereto set my hand, this .lst day of April, A. I). 1869. Y

LORING GOES.

Witness-es G. M. BENT, BnNJ. l). DwINNnnL. 

